I never trusted Time Machine, my primary line of defense is rsync to a server running ZFS with hourly snapshots, and weekly rotations of offsite drives. For bootable backups, Carbon Copy Cloner.
+1 for Carbon Copy Cloner. Rock-solid reliable and well-supported.
https://bombich.com
+1 for Carbon Copy Cloner. Rock-solid reliable and well-supported.
https://bombich.com